1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <ctype.h> 31 #include <sys/zfs_context.h> 32 #include <sys/spa.h> 33 #include <sys/spa_impl.h> 34 #include <sys/dmu.h> 35 #include <sys/zap.h> 36 #include <sys/fs/zfs.h> 37 #include <sys/zfs_znode.h> 38 #include <sys/vdev.h> 39 #include <sys/vdev_impl.h> 40 #include <sys/metaslab_impl.h> 41 #include <sys/dmu_objset.h> 42 #include <sys/dsl_dir.h> 43 #include <sys/dsl_dataset.h> 44 #include <sys/dsl_pool.h> 45 #include <sys/dbuf.h> 46 #include <sys/zil.h> 47 #include <sys/zil_impl.h> 48 #include <sys/stat.h> 49 #include <sys/resource.h> 50 #include <sys/dmu_traverse.h> 51 #include <sys/zio_checksum.h> 52 #include <sys/zio_compress.h> 53 54 const char cmdname[] = "zdb"; 55 uint8_t dump_opt[256]; 56 57 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size); 58 59 extern void dump_intent_log(zilog_t *); 60 uint64_t *zopt_object = NULL; 61 int zopt_objects = 0; 62 int zdb_advance = ADVANCE_PRE; 63 zbookmark_t zdb_noread = { 0, 0, ZB_NO_LEVEL, 0 }; 64 65 /* 66 * These libumem hooks provide a reasonable set of defaults for the allocator's 67 * debugging facilities. 68 */ 69 const char * 70 _umem_debug_init() 71 { 72 return ("default,verbose"); /* $UMEM_DEBUG setting */ 73 } 74 75 const char * 76 _umem_logging_init(void) 77 { 78 return ("fail,contents"); /* $UMEM_LOGGING setting */ 79 } 80 81 static void 82 usage(void) 83 { 84 (void) fprintf(stderr, 85 "Usage: %s [-udibcsvLU] [-O order] [-B os:obj:level:blkid] " 86 "dataset [object...]\n" 87 " %s -C [pool]\n" 88 " %s -l dev\n" 89 " %s -R vdev:offset:size:flags\n", 90 cmdname, cmdname, cmdname, cmdname); 91 92 (void) fprintf(stderr, " -u uberblock\n"); 93 (void) fprintf(stderr, " -d datasets\n"); 94 (void) fprintf(stderr, " -C cached pool configuration\n"); 95 (void) fprintf(stderr, " -i intent logs\n"); 96 (void) fprintf(stderr, " -b block statistics\n"); 97 (void) fprintf(stderr, " -c checksum all data blocks\n"); 98 (void) fprintf(stderr, " -s report stats on zdb's I/O\n"); 99 (void) fprintf(stderr, " -v verbose (applies to all others)\n"); 100 (void) fprintf(stderr, " -l dump label contents\n"); 101 (void) fprintf(stderr, " -L live pool (allows some errors)\n"); 102 (void) fprintf(stderr, " -O [!]<pre|post|prune|data|holes> " 103 "visitation order\n"); 104 (void) fprintf(stderr, " -U use zpool.cache in /tmp\n"); 105 (void) fprintf(stderr, " -B objset:object:level:blkid -- " 106 "simulate bad block\n"); 107 (void) fprintf(stderr, " -R read and display block from a" 108 "device\n"); 109 (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) " 110 "to make only that option verbose\n"); 111 (void) fprintf(stderr, "Default is to dump everything non-verbosely\n"); 112 exit(1); 113 } 114 115 static void 116 fatal(const char *fmt, ...) 117 { 118 va_list ap; 119 120 va_start(ap, fmt); 121 (void) fprintf(stderr, "%s: ", cmdname); 122 (void) vfprintf(stderr, fmt, ap); 123 va_end(ap); 124 (void) fprintf(stderr, "\n"); 125 126 exit(1); 127 } 128 129 static void 130 dump_nvlist(nvlist_t *list, int indent) 131 { 132 nvpair_t *elem = NULL; 133 134 while ((elem = nvlist_next_nvpair(list, elem)) != NULL) { 135 switch (nvpair_type(elem)) { 136 case DATA_TYPE_STRING: 137 { 138 char *value; 139 140 VERIFY(nvpair_value_string(elem, &value) == 0); 141 (void) printf("%*s%s='%s'\n", indent, "", 142 nvpair_name(elem), value); 143 } 144 break; 145 146 case DATA_TYPE_UINT64: 147 { 148 uint64_t value; 149 150 VERIFY(nvpair_value_uint64(elem, &value) == 0); 151 (void) printf("%*s%s=%llu\n", indent, "", 152 nvpair_name(elem), (u_longlong_t)value); 153 } 154 break; 155 156 case DATA_TYPE_NVLIST: 157 { 158 nvlist_t *value; 159 160 VERIFY(nvpair_value_nvlist(elem, &value) == 0); 161 (void) printf("%*s%s\n", indent, "", 162 nvpair_name(elem)); 163 dump_nvlist(value, indent + 4); 164 } 165 break; 166 167 case DATA_TYPE_NVLIST_ARRAY: 168 { 169 nvlist_t **value; 170 uint_t c, count; 171 172 VERIFY(nvpair_value_nvlist_array(elem, &value, 173 &count) == 0); 174 175 for (c = 0; c < count; c++) { 176 (void) printf("%*s%s[%u]\n", indent, "", 177 nvpair_name(elem), c); 178 dump_nvlist(value[c], indent + 8); 179 } 180 } 181 break; 182 183 default: 184 185 (void) printf("bad config type %d for %s\n", 186 nvpair_type(elem), nvpair_name(elem)); 187 } 188 } 189 } 190 191 /* ARGSUSED */ 192 static void 193 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size) 194 { 195 nvlist_t *nv; 196 size_t nvsize = *(uint64_t *)data; 197 char *packed = umem_alloc(nvsize, UMEM_NOFAIL); 198 199 VERIFY(0 == dmu_read(os, object, 0, nvsize, packed)); 200 201 VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0); 202 203 umem_free(packed, nvsize); 204 205 dump_nvlist(nv, 8); 206 207 nvlist_free(nv); 208 } 209 210 const char dump_zap_stars[] = "****************************************"; 211 const int dump_zap_width = sizeof (dump_zap_stars) - 1; 212 213 static void 214 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE]) 215 { 216 int i; 217 int minidx = ZAP_HISTOGRAM_SIZE - 1; 218 int maxidx = 0; 219 uint64_t max = 0; 220 221 for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) { 222 if (histo[i] > max) 223 max = histo[i]; 224 if (histo[i] > 0 && i > maxidx) 225 maxidx = i; 226 if (histo[i] > 0 && i < minidx) 227 minidx = i; 228 } 229 230 if (max < dump_zap_width) 231 max = dump_zap_width; 232 233 for (i = minidx; i <= maxidx; i++) 234 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i], 235 &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]); 236 } 237 238 static void 239 dump_zap_stats(objset_t *os, uint64_t object) 240 { 241 int error; 242 zap_stats_t zs; 243 244 error = zap_get_stats(os, object, &zs); 245 if (error) 246 return; 247 248 if (zs.zs_ptrtbl_len == 0) { 249 ASSERT(zs.zs_num_blocks == 1); 250 (void) printf("\tmicrozap: %llu bytes, %llu entries\n", 251 (u_longlong_t)zs.zs_blocksize, 252 (u_longlong_t)zs.zs_num_entries); 253 return; 254 } 255 256 (void) printf("\tFat ZAP stats:\n"); 257 258 (void) printf("\t\tPointer table:\n"); 259 (void) printf("\t\t\t%llu elements\n", 260 (u_longlong_t)zs.zs_ptrtbl_len); 261 (void) printf("\t\t\tzt_blk: %llu\n", 262 (u_longlong_t)zs.zs_ptrtbl_zt_blk); 263 (void) printf("\t\t\tzt_numblks: %llu\n", 264 (u_longlong_t)zs.zs_ptrtbl_zt_numblks); 265 (void) printf("\t\t\tzt_shift: %llu\n", 266 (u_longlong_t)zs.zs_ptrtbl_zt_shift); 267 (void) printf("\t\t\tzt_blks_copied: %llu\n", 268 (u_longlong_t)zs.zs_ptrtbl_blks_copied); 269 (void) printf("\t\t\tzt_nextblk: %llu\n", 270 (u_longlong_t)zs.zs_ptrtbl_nextblk); 271 272 (void) printf("\t\tZAP entries: %llu\n", 273 (u_longlong_t)zs.zs_num_entries); 274 (void) printf("\t\tLeaf blocks: %llu\n", 275 (u_longlong_t)zs.zs_num_leafs); 276 (void) printf("\t\tTotal blocks: %llu\n", 277 (u_longlong_t)zs.zs_num_blocks); 278 (void) printf("\t\tzap_block_type: 0x%llx\n", 279 (u_longlong_t)zs.zs_block_type); 280 (void) printf("\t\tzap_magic: 0x%llx\n", 281 (u_longlong_t)zs.zs_magic); 282 (void) printf("\t\tzap_salt: 0x%llx\n", 283 (u_longlong_t)zs.zs_salt); 284 285 (void) printf("\t\tLeafs with 2^n pointers:\n"); 286 dump_zap_histogram(zs.zs_leafs_with_2n_pointers); 287 288 (void) printf("\t\tBlocks with n*5 entries:\n"); 289 dump_zap_histogram(zs.zs_blocks_with_n5_entries); 290 291 (void) printf("\t\tBlocks n/10 full:\n"); 292 dump_zap_histogram(zs.zs_blocks_n_tenths_full); 293 294 (void) printf("\t\tEntries with n chunks:\n"); 295 dump_zap_histogram(zs.zs_entries_using_n_chunks); 296 297 (void) printf("\t\tBuckets with n entries:\n"); 298 dump_zap_histogram(zs.zs_buckets_with_n_entries); 299 } 300 301 /*ARGSUSED*/ 302 static void 303 dump_none(objset_t *os, uint64_t object, void *data, size_t size) 304 { 305 } 306 307 /*ARGSUSED*/ 308 void 309 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size) 310 { 311 } 312 313 /*ARGSUSED*/ 314 static void 315 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size) 316 { 317 } 318 319 /*ARGSUSED*/ 320 static void 321 dump_zap(objset_t *os, uint64_t object, void *data, size_t size) 322 { 323 zap_cursor_t zc; 324 zap_attribute_t attr; 325 void *prop; 326 int i; 327 328 dump_zap_stats(os, object); 329 (void) printf("\n"); 330 331 for (zap_cursor_init(&zc, os, object); 332 zap_cursor_retrieve(&zc, &attr) == 0; 333 zap_cursor_advance(&zc)) { 334 (void) printf("\t\t%s = ", attr.za_name); 335 if (attr.za_num_integers == 0) { 336 (void) printf("\n"); 337 continue; 338 } 339 prop = umem_zalloc(attr.za_num_integers * 340 attr.za_integer_length, UMEM_NOFAIL); 341 (void) zap_lookup(os, object, attr.za_name, 342 attr.za_integer_length, attr.za_num_integers, prop); 343 if (attr.za_integer_length == 1) { 344 (void) printf("%s", (char *)prop); 345 } else { 346 for (i = 0; i < attr.za_num_integers; i++) { 347 switch (attr.za_integer_length) { 348 case 2: 349 (void) printf("%u ", 350 ((uint16_t *)prop)[i]); 351 break; 352 case 4: 353 (void) printf("%u ", 354 ((uint32_t *)prop)[i]); 355 break; 356 case 8: 357 (void) printf("%lld ", 358 (u_longlong_t)((int64_t *)prop)[i]); 359 break; 360 } 361 } 362 } 363 (void) printf("\n"); 364 umem_free(prop, attr.za_num_integers * attr.za_integer_length); 365 } 366 zap_cursor_fini(&zc); 367 } 368 369 static void 370 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm) 371 { 372 uint64_t alloc, offset, entry; 373 uint8_t mapshift = sm->sm_shift; 374 uint64_t mapstart = sm->sm_start; 375 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID" }; 376 377 if (smo->smo_object == 0) 378 return; 379 380 /* 381 * Print out the freelist entries in both encoded and decoded form. 382 */ 383 alloc = 0; 384 for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) { 385 VERIFY(0 == dmu_read(os, smo->smo_object, offset, 386 sizeof (entry), &entry)); 387 if (SM_DEBUG_DECODE(entry)) { 388 (void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n", 389 (u_longlong_t)(offset / sizeof (entry)), 390 ddata[SM_DEBUG_ACTION_DECODE(entry)], 391 SM_DEBUG_TXG_DECODE(entry), 392 SM_DEBUG_SYNCPASS_DECODE(entry)); 393 } else { 394 (void) printf("\t\t[%4llu] %c range:" 395 " %08llx-%08llx size: %06llx\n", 396 (u_longlong_t)(offset / sizeof (entry)), 397 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F', 398 (SM_OFFSET_DECODE(entry) << mapshift) + mapstart, 399 (SM_OFFSET_DECODE(entry) << mapshift) + mapstart + 400 (SM_RUN_DECODE(entry) << mapshift), 401 (SM_RUN_DECODE(entry) << mapshift)); 402 if (SM_TYPE_DECODE(entry) == SM_ALLOC) 403 alloc += SM_RUN_DECODE(entry) << mapshift; 404 else 405 alloc -= SM_RUN_DECODE(entry) << mapshift; 406 } 407 } 408 if (alloc != smo->smo_alloc) { 409 (void) printf("space_map_object alloc (%llu) INCONSISTENT " 410 "with space map summary (%llu)\n", 411 (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc); 412 } 413 } 414 415 static void 416 dump_metaslab(metaslab_t *msp) 417 { 418 char freebuf[5]; 419 space_map_obj_t *smo = &msp->ms_smo; 420 vdev_t *vd = msp->ms_group->mg_vd; 421 spa_t *spa = vd->vdev_spa; 422 423 nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf); 424 425 if (dump_opt['d'] <= 5) { 426 (void) printf("\t%10llx %10llu %5s\n", 427 (u_longlong_t)msp->ms_map.sm_start, 428 (u_longlong_t)smo->smo_object, 429 freebuf); 430 return; 431 } 432 433 (void) printf( 434 "\tvdev %llu offset %08llx spacemap %4llu free %5s\n", 435 (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start, 436 (u_longlong_t)smo->smo_object, freebuf); 437 438 ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift)); 439 440 dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map); 441 } 442 443 static void 444 dump_metaslabs(spa_t *spa) 445 { 446 vdev_t *rvd = spa->spa_root_vdev; 447 vdev_t *vd; 448 int c, m; 449 450 (void) printf("\nMetaslabs:\n"); 451 452 for (c = 0; c < rvd->vdev_children; c++) { 453 vd = rvd->vdev_child[c]; 454 455 spa_config_enter(spa, RW_READER, FTAG); 456 (void) printf("\n vdev %llu = %s\n\n", 457 (u_longlong_t)vd->vdev_id, vdev_description(vd)); 458 spa_config_exit(spa, FTAG); 459 460 if (dump_opt['d'] <= 5) { 461 (void) printf("\t%10s %10s %5s\n", 462 "offset", "spacemap", "free"); 463 (void) printf("\t%10s %10s %5s\n", 464 "------", "--------", "----"); 465 } 466 for (m = 0; m < vd->vdev_ms_count; m++) 467 dump_metaslab(vd->vdev_ms[m]); 468 (void) printf("\n"); 469 } 470 } 471 472 static void 473 dump_dtl(vdev_t *vd, int indent) 474 { 475 avl_tree_t *t = &vd->vdev_dtl_map.sm_root; 476 spa_t *spa = vd->vdev_spa; 477 space_seg_t *ss; 478 vdev_t *pvd; 479 int c; 480 481 if (indent == 0) 482 (void) printf("\nDirty time logs:\n\n"); 483 484 spa_config_enter(spa, RW_READER, FTAG); 485 (void) printf("\t%*s%s\n", indent, "", vdev_description(vd)); 486 spa_config_exit(spa, FTAG); 487 488 for (ss = avl_first(t); ss; ss = AVL_NEXT(t, ss)) { 489 /* 490 * Everything in this DTL must appear in all parent DTL unions. 491 */ 492 for (pvd = vd; pvd; pvd = pvd->vdev_parent) 493 ASSERT(vdev_dtl_contains(&pvd->vdev_dtl_map, 494 ss->ss_start, ss->ss_end - ss->ss_start)); 495 (void) printf("\t%*soutage [%llu,%llu] length %llu\n", 496 indent, "", 497 (u_longlong_t)ss->ss_start, 498 (u_longlong_t)ss->ss_end - 1, 499 (u_longlong_t)ss->ss_end - ss->ss_start); 500 } 501 502 (void) printf("\n"); 503 504 if (dump_opt['d'] > 5 && vd->vdev_children == 0) { 505 dump_spacemap(vd->vdev_spa->spa_meta_objset, &vd->vdev_dtl, 506 &vd->vdev_dtl_map); 507 (void) printf("\n"); 508 } 509 510 for (c = 0; c < vd->vdev_children; c++) 511 dump_dtl(vd->vdev_child[c], indent + 4); 512 } 513 514 /*ARGSUSED*/ 515 static void 516 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size) 517 { 518 } 519 520 static uint64_t 521 blkid2offset(dnode_phys_t *dnp, int level, uint64_t blkid) 522 { 523 if (level < 0) 524 return (blkid); 525 526 return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) * 527 dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); 528 } 529 530 static void 531 sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas) 532 { 533 dva_t *dva = bp->blk_dva; 534 int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1; 535 int i; 536 537 blkbuf[0] = '\0'; 538 539 for (i = 0; i < ndvas; i++) 540 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ", 541 (u_longlong_t)DVA_GET_VDEV(&dva[i]), 542 (u_longlong_t)DVA_GET_OFFSET(&dva[i]), 543 (u_longlong_t)DVA_GET_ASIZE(&dva[i])); 544 545 (void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu", 546 (u_longlong_t)BP_GET_LSIZE(bp), 547 (u_longlong_t)BP_GET_PSIZE(bp), 548 (u_longlong_t)bp->blk_fill, 549 (u_longlong_t)bp->blk_birth); 550 } 551 552 /* ARGSUSED */ 553 static int 554 zdb_indirect_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a) 555 { 556 zbookmark_t *zb = &bc->bc_bookmark; 557 blkptr_t *bp = &bc->bc_blkptr; 558 void *data = bc->bc_data; 559 dnode_phys_t *dnp = bc->bc_dnode; 560 char blkbuf[BP_SPRINTF_LEN + 80]; 561 int l; 562 563 if (bc->bc_errno) { 564 (void) sprintf(blkbuf, 565 "Error %d reading <%llu, %llu, %lld, %llu>: ", 566 bc->bc_errno, 567 (u_longlong_t)zb->zb_objset, 568 (u_longlong_t)zb->zb_object, 569 (u_longlong_t)zb->zb_level, 570 (u_longlong_t)zb->zb_blkid); 571 goto out; 572 } 573 574 if (zb->zb_level == -1) { 575 ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET); 576 ASSERT3U(BP_GET_LEVEL(bp), ==, 0); 577 } else { 578 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type); 579 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level); 580 } 581 582 if (zb->zb_level > 0) { 583 uint64_t fill = 0; 584 blkptr_t *bpx, *bpend; 585 586 for (bpx = data, bpend = bpx + BP_GET_LSIZE(bp) / sizeof (*bpx); 587 bpx < bpend; bpx++) { 588 if (bpx->blk_birth != 0) { 589 fill += bpx->blk_fill; 590 } else { 591 ASSERT(bpx->blk_fill == 0); 592 } 593 } 594 ASSERT3U(fill, ==, bp->blk_fill); 595 } 596 597 if (zb->zb_level == 0 && dnp->dn_type == DMU_OT_DNODE) { 598 uint64_t fill = 0; 599 dnode_phys_t *dnx, *dnend; 600 601 for (dnx = data, dnend = dnx + (BP_GET_LSIZE(bp)>>DNODE_SHIFT); 602 dnx < dnend; dnx++) { 603 if (dnx->dn_type != DMU_OT_NONE) 604 fill++; 605 } 606 ASSERT3U(fill, ==, bp->blk_fill); 607 } 608 609 (void) sprintf(blkbuf, "%16llx ", 610 (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid)); 611 612 ASSERT(zb->zb_level >= 0); 613 614 for (l = dnp->dn_nlevels - 1; l >= -1; l--) { 615 if (l == zb->zb_level) { 616 (void) sprintf(blkbuf + strlen(blkbuf), "L%llx", 617 (u_longlong_t)zb->zb_level); 618 } else { 619 (void) sprintf(blkbuf + strlen(blkbuf), " "); 620 } 621 } 622 623 out: 624 if (bp->blk_birth == 0) { 625 (void) sprintf(blkbuf + strlen(blkbuf), "<hole>"); 626 (void) printf("%s\n", blkbuf); 627 } else { 628 sprintf_blkptr_compact(blkbuf + strlen(blkbuf), bp, 629 dump_opt['d'] > 5 ? 1 : 0); 630 (void) printf("%s\n", blkbuf); 631 } 632 633 return (bc->bc_errno ? ERESTART : 0); 634 } 635 636 /*ARGSUSED*/ 637 static void 638 dump_indirect(objset_t *os, uint64_t object, void *data, size_t size) 639 { 640 traverse_handle_t *th; 641 uint64_t objset = dmu_objset_id(os); 642 int advance = zdb_advance; 643 644 (void) printf("Indirect blocks:\n"); 645 646 if (object == 0) 647 advance |= ADVANCE_DATA; 648 649 th = traverse_init(dmu_objset_spa(os), zdb_indirect_cb, NULL, advance, 650 ZIO_FLAG_CANFAIL); 651 th->th_noread = zdb_noread; 652 653 traverse_add_dnode(th, 0, -1ULL, objset, object); 654 655 while (traverse_more(th) == EAGAIN) 656 continue; 657 658 (void) printf("\n"); 659 660 traverse_fini(th); 661 } 662 663 /*ARGSUSED*/ 664 static void 665 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size) 666 { 667 dsl_dir_phys_t *dd = data; 668 time_t crtime; 669 char used[6], compressed[6], uncompressed[6], quota[6], resv[6]; 670 671 if (dd == NULL) 672 return; 673 674 ASSERT(size == sizeof (*dd)); 675 676 crtime = dd->dd_creation_time; 677 nicenum(dd->dd_used_bytes, used); 678 nicenum(dd->dd_compressed_bytes, compressed); 679 nicenum(dd->dd_uncompressed_bytes, uncompressed); 680 nicenum(dd->dd_quota, quota); 681 nicenum(dd->dd_reserved, resv); 682 683 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 684 (void) printf("\t\thead_dataset_obj = %llu\n", 685 (u_longlong_t)dd->dd_head_dataset_obj); 686 (void) printf("\t\tparent_dir_obj = %llu\n", 687 (u_longlong_t)dd->dd_parent_obj); 688 (void) printf("\t\tclone_parent_obj = %llu\n", 689 (u_longlong_t)dd->dd_clone_parent_obj); 690 (void) printf("\t\tchild_dir_zapobj = %llu\n", 691 (u_longlong_t)dd->dd_child_dir_zapobj); 692 (void) printf("\t\tused_bytes = %s\n", used); 693 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 694 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 695 (void) printf("\t\tquota = %s\n", quota); 696 (void) printf("\t\treserved = %s\n", resv); 697 (void) printf("\t\tprops_zapobj = %llu\n", 698 (u_longlong_t)dd->dd_props_zapobj); 699 } 700 701 /*ARGSUSED*/ 702 static void 703 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size) 704 { 705 dsl_dataset_phys_t *ds = data; 706 time_t crtime; 707 char used[6], compressed[6], uncompressed[6], unique[6]; 708 char blkbuf[BP_SPRINTF_LEN]; 709 710 if (ds == NULL) 711 return; 712 713 ASSERT(size == sizeof (*ds)); 714 crtime = ds->ds_creation_time; 715 nicenum(ds->ds_used_bytes, used); 716 nicenum(ds->ds_compressed_bytes, compressed); 717 nicenum(ds->ds_uncompressed_bytes, uncompressed); 718 nicenum(ds->ds_unique_bytes, unique); 719 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp); 720 721 (void) printf("\t\tdataset_obj = %llu\n", 722 (u_longlong_t)ds->ds_dir_obj); 723 (void) printf("\t\tprev_snap_obj = %llu\n", 724 (u_longlong_t)ds->ds_prev_snap_obj); 725 (void) printf("\t\tprev_snap_txg = %llu\n", 726 (u_longlong_t)ds->ds_prev_snap_txg); 727 (void) printf("\t\tnext_snap_obj = %llu\n", 728 (u_longlong_t)ds->ds_next_snap_obj); 729 (void) printf("\t\tsnapnames_zapobj = %llu\n", 730 (u_longlong_t)ds->ds_snapnames_zapobj); 731 (void) printf("\t\tnum_children = %llu\n", 732 (u_longlong_t)ds->ds_num_children); 733 (void) printf("\t\tcreation_time = %s", ctime(&crtime)); 734 (void) printf("\t\tcreation_txg = %llu\n", 735 (u_longlong_t)ds->ds_creation_txg); 736 (void) printf("\t\tdeadlist_obj = %llu\n", 737 (u_longlong_t)ds->ds_deadlist_obj); 738 (void) printf("\t\tused_bytes = %s\n", used); 739 (void) printf("\t\tcompressed_bytes = %s\n", compressed); 740 (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); 741 (void) printf("\t\tunique = %s\n", unique); 742 (void) printf("\t\tfsid_guid = %llu\n", 743 (u_longlong_t)ds->ds_fsid_guid); 744 (void) printf("\t\tguid = %llu\n", 745 (u_longlong_t)ds->ds_guid); 746 (void) printf("\t\tinconsistent = %llu\n", 747 (u_longlong_t)ds->ds_inconsistent); 748 (void) printf("\t\tbp = %s\n", blkbuf); 749 } 750 751 static void 752 dump_bplist(objset_t *mos, uint64_t object, char *name) 753 { 754 bplist_t bpl = { 0 }; 755 blkptr_t blk, *bp = &blk; 756 uint64_t itor = 0; 757 char numbuf[6]; 758 759 if (dump_opt['d'] < 3) 760 return; 761 762 VERIFY(0 == bplist_open(&bpl, mos, object)); 763 if (bplist_empty(&bpl)) { 764 bplist_close(&bpl); 765 return; 766 } 767 768 nicenum(bpl.bpl_phys->bpl_bytes, numbuf); 769 770 (void) printf("\n %s: %llu entries, %s\n", 771 name, (u_longlong_t)bpl.bpl_phys->bpl_entries, numbuf); 772 773 if (dump_opt['d'] < 5) { 774 bplist_close(&bpl); 775 return; 776 } 777 778 (void) printf("\n"); 779 780 while (bplist_iterate(&bpl, &itor, bp) == 0) { 781 char blkbuf[BP_SPRINTF_LEN]; 782 783 ASSERT(bp->blk_birth != 0); 784 sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0); 785 (void) printf("\tItem %3llu: %s\n", 786 (u_longlong_t)itor - 1, blkbuf); 787 } 788 789 bplist_close(&bpl); 790 } 791 792 static char * 793 znode_path(objset_t *os, uint64_t object, char *pathbuf, size_t size) 794 { 795 dmu_buf_t *db; 796 dmu_object_info_t doi; 797 znode_phys_t *zp; 798 uint64_t parent = 0; 799 size_t complen; 800 char component[MAXNAMELEN + 1]; 801 char *path; 802 int error; 803 804 path = pathbuf + size; 805 *--path = '\0'; 806 807 for (;;) { 808 error = dmu_bonus_hold(os, object, FTAG, &db); 809 if (error) 810 break; 811 812 dmu_object_info_from_db(db, &doi); 813 zp = db->db_data; 814 parent = zp->zp_parent; 815 dmu_buf_rele(db, FTAG); 816 817 if (doi.doi_bonus_type != DMU_OT_ZNODE) 818 break; 819 820 if (parent == object) { 821 if (path[0] != '/') 822 *--path = '/'; 823 return (path); 824 } 825 826 if (zap_value_search(os, parent, object, component) != 0) 827 break; 828 829 complen = strlen(component); 830 path -= complen; 831 bcopy(component, path, complen); 832 *--path = '/'; 833 834 object = parent; 835 } 836 837 (void) sprintf(component, "???<object#%llu>", (u_longlong_t)object); 838 839 complen = strlen(component); 840 path -= complen; 841 bcopy(component, path, complen); 842 843 return (path); 844 } 845 846 /*ARGSUSED*/ 847 static void 848 dump_znode(objset_t *os, uint64_t object, void *data, size_t size) 849 { 850 znode_phys_t *zp = data; 851 time_t z_crtime, z_atime, z_mtime, z_ctime; 852 char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */ 853 854 ASSERT(size >= sizeof (znode_phys_t)); 855 856 if (dump_opt['d'] < 3) { 857 (void) printf("\t%s\n", 858 znode_path(os, object, path, sizeof (path))); 859 return; 860 } 861 862 z_crtime = (time_t)zp->zp_crtime[0]; 863 z_atime = (time_t)zp->zp_atime[0]; 864 z_mtime = (time_t)zp->zp_mtime[0]; 865 z_ctime = (time_t)zp->zp_ctime[0]; 866 867 (void) printf("\tpath %s\n", 868 znode_path(os, object, path, sizeof (path))); 869 (void) printf("\tatime %s", ctime(&z_atime)); 870 (void) printf("\tmtime %s", ctime(&z_mtime)); 871 (void) printf("\tctime %s", ctime(&z_ctime)); 872 (void) printf("\tcrtime %s", ctime(&z_crtime)); 873 (void) printf("\tgen %llu\n", (u_longlong_t)zp->zp_gen); 874 (void) printf("\tmode %llo\n", (u_longlong_t)zp->zp_mode); 875 (void) printf("\tsize %llu\n", (u_longlong_t)zp->zp_size); 876 (void) printf("\tparent %llu\n", (u_longlong_t)zp->zp_parent); 877 (void) printf("\tlinks %llu\n", (u_longlong_t)zp->zp_links); 878 (void) printf("\txattr %llu\n", (u_longlong_t)zp->zp_xattr); 879 (void) printf("\trdev 0x%016llx\n", (u_longlong_t)zp->zp_rdev); 880 } 881 882 /*ARGSUSED*/ 883 static void 884 dump_acl(objset_t *os, uint64_t object, void *data, size_t size) 885 { 886 } 887 888 /*ARGSUSED*/ 889 static void 890 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) 891 { 892 } 893 894 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = { 895 dump_none, /* unallocated */ 896 dump_zap, /* object directory */ 897 dump_uint64, /* object array */ 898 dump_none, /* packed nvlist */ 899 dump_packed_nvlist, /* packed nvlist size */ 900 dump_none, /* bplist */ 901 dump_none, /* bplist header */ 902 dump_none, /* SPA space map header */ 903 dump_none, /* SPA space map */ 904 dump_none, /* ZIL intent log */ 905 dump_dnode, /* DMU dnode */ 906 dump_dmu_objset, /* DMU objset */ 907 dump_dsl_dir, /* DSL directory */ 908 dump_zap, /* DSL directory child map */ 909 dump_zap, /* DSL dataset snap map */ 910 dump_zap, /* DSL props */ 911 dump_dsl_dataset, /* DSL dataset */ 912 dump_znode, /* ZFS znode */ 913 dump_acl, /* ZFS ACL */ 914 dump_uint8, /* ZFS plain file */ 915 dump_zap, /* ZFS directory */ 916 dump_zap, /* ZFS master node */ 917 dump_zap, /* ZFS delete queue */ 918 dump_uint8, /* zvol object */ 919 dump_zap, /* zvol prop */ 920 dump_uint8, /* other uint8[] */ 921 dump_uint64, /* other uint64[] */ 922 dump_zap, /* other ZAP */ 923 dump_zap, /* persistent error log */ 924 }; 925 926 static void 927 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) 928 { 929 dmu_buf_t *db = NULL; 930 dmu_object_info_t doi; 931 dnode_t *dn; 932 void *bonus = NULL; 933 size_t bsize = 0; 934 char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6]; 935 char aux[50]; 936 int error; 937 938 if (*print_header) { 939 (void) printf("\n Object lvl iblk dblk lsize" 940 " asize type\n"); 941 *print_header = 0; 942 } 943 944 if (object == 0) { 945 dn = os->os->os_meta_dnode; 946 } else { 947 error = dmu_bonus_hold(os, object, FTAG, &db); 948 if (error) 949 fatal("dmu_bonus_hold(%llu) failed, errno %u", 950 object, error); 951 bonus = db->db_data; 952 bsize = db->db_size; 953 dn = ((dmu_buf_impl_t *)db)->db_dnode; 954 } 955 dmu_object_info_from_dnode(dn, &doi); 956 957 nicenum(doi.doi_metadata_block_size, iblk); 958 nicenum(doi.doi_data_block_size, dblk); 959 nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1), 960 lsize); 961 nicenum(doi.doi_physical_blks << 9, asize); 962 nicenum(doi.doi_bonus_size, bonus_size); 963 964 aux[0] = '\0'; 965 966 if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) 967 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", 968 zio_checksum_table[doi.doi_checksum].ci_name); 969 970 if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) 971 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", 972 zio_compress_table[doi.doi_compress].ci_name); 973 974 (void) printf("%10lld %3u %5s %5s %5s %5s %s%s\n", 975 (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize, 976 asize, dmu_ot[doi.doi_type].ot_name, aux); 977 978 if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { 979 (void) printf("%10s %3s %5s %5s %5s %5s %s\n", 980 "", "", "", "", bonus_size, "bonus", 981 dmu_ot[doi.doi_bonus_type].ot_name); 982 } 983 984 if (verbosity >= 4) { 985 object_viewer[doi.doi_bonus_type](os, object, bonus, bsize); 986 object_viewer[doi.doi_type](os, object, NULL, 0); 987 *print_header = 1; 988 } 989 990 if (verbosity >= 5) 991 dump_indirect(os, object, NULL, 0); 992 993 if (verbosity >= 5) { 994 /* 995 * Report the list of segments that comprise the object. 996 */ 997 uint64_t start = 0; 998 uint64_t end; 999 uint64_t blkfill = 1; 1000 int minlvl = 1; 1001 1002 if (dn->dn_type == DMU_OT_DNODE) { 1003 minlvl = 0; 1004 blkfill = DNODES_PER_BLOCK; 1005 } 1006 1007 for (;;) { 1008 error = dnode_next_offset(dn, B_FALSE, &start, minlvl, 1009 blkfill); 1010 if (error) 1011 break; 1012 end = start; 1013 error = dnode_next_offset(dn, B_TRUE, &end, minlvl, 1014 blkfill); 1015 nicenum(end - start, segsize); 1016 (void) printf("\t\tsegment [%016llx, %016llx)" 1017 " size %5s\n", (u_longlong_t)start, 1018 (u_longlong_t)end, segsize); 1019 if (error) 1020 break; 1021 start = end; 1022 } 1023 } 1024 1025 if (db != NULL) 1026 dmu_buf_rele(db, FTAG); 1027 } 1028 1029 static char *objset_types[DMU_OST_NUMTYPES] = { 1030 "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; 1031 1032 /*ARGSUSED*/ 1033 static void 1034 dump_dir(objset_t *os) 1035 { 1036 dmu_objset_stats_t dds; 1037 uint64_t object, object_count; 1038 char numbuf[8]; 1039 char blkbuf[BP_SPRINTF_LEN]; 1040 char osname[MAXNAMELEN]; 1041 char *type = "UNKNOWN"; 1042 int verbosity = dump_opt['d']; 1043 int print_header = 1; 1044 int i, error; 1045 1046 dmu_objset_stats(os, &dds); 1047 1048 if (dds.dds_type < DMU_OST_NUMTYPES) 1049 type = objset_types[dds.dds_type]; 1050 1051 if (dds.dds_type == DMU_OST_META) { 1052 dds.dds_creation_txg = TXG_INITIAL; 1053 dds.dds_last_txg = os->os->os_rootbp.blk_birth; 1054 dds.dds_objects_used = os->os->os_rootbp.blk_fill; 1055 dds.dds_space_refd = 1056 os->os->os_spa->spa_dsl_pool->dp_mos_dir->dd_used_bytes; 1057 } 1058 1059 ASSERT3U(dds.dds_objects_used, ==, os->os->os_rootbp.blk_fill); 1060 1061 nicenum(dds.dds_space_refd, numbuf); 1062 1063 if (verbosity >= 4) { 1064 (void) strcpy(blkbuf, ", rootbp "); 1065 sprintf_blkptr(blkbuf + strlen(blkbuf), 1066 BP_SPRINTF_LEN - strlen(blkbuf), &os->os->os_rootbp); 1067 } else { 1068 blkbuf[0] = '\0'; 1069 } 1070 1071 dmu_objset_name(os, osname); 1072 1073 (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, last_txg %llu, " 1074 "%s, %llu objects%s\n", 1075 osname, type, (u_longlong_t)dmu_objset_id(os), 1076 (u_longlong_t)dds.dds_creation_txg, 1077 (u_longlong_t)dds.dds_last_txg, 1078 numbuf, 1079 (u_longlong_t)dds.dds_objects_used, 1080 blkbuf); 1081 1082 dump_intent_log(dmu_objset_zil(os)); 1083 1084 if (dmu_objset_ds(os) != NULL) 1085 dump_bplist(dmu_objset_pool(os)->dp_meta_objset, 1086 dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist"); 1087 1088 if (verbosity < 2) 1089 return; 1090 1091 if (zopt_objects != 0) { 1092 for (i = 0; i < zopt_objects; i++) 1093 dump_object(os, zopt_object[i], verbosity, 1094 &print_header); 1095 (void) printf("\n"); 1096 return; 1097 } 1098 1099 dump_object(os, 0, verbosity, &print_header); 1100 object_count = 1; 1101 1102 object = 0; 1103 while ((error = dmu_object_next(os, &object, B_FALSE)) == 0) { 1104 dump_object(os, object, verbosity, &print_header); 1105 object_count++; 1106 } 1107 1108 ASSERT3U(object_count, ==, dds.dds_objects_used); 1109 1110 (void) printf("\n"); 1111 1112 if (error != ESRCH) 1113 fatal("dmu_object_next() = %d", error); 1114 } 1115 1116 static void 1117 dump_uberblock(uberblock_t *ub) 1118 { 1119 time_t timestamp = ub->ub_timestamp; 1120 1121 (void) printf("Uberblock\n\n"); 1122 (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); 1123 (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); 1124 (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); 1125 (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); 1126 (void) printf("\ttimestamp = %llu UTC = %s", 1127 (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); 1128 if (dump_opt['u'] >= 3) { 1129 char blkbuf[BP_SPRINTF_LEN]; 1130 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp); 1131 (void) printf("\trootbp = %s\n", blkbuf); 1132 } 1133 (void) printf("\n"); 1134 } 1135 1136 static void 1137 dump_config(const char *pool) 1138 { 1139 spa_t *spa = NULL; 1140 1141 mutex_enter(&spa_namespace_lock); 1142 while ((spa = spa_next(spa)) != NULL) { 1143 if (pool == NULL) 1144 (void) printf("%s\n", spa_name(spa)); 1145 if (pool == NULL || strcmp(pool, spa_name(spa)) == 0) 1146 dump_nvlist(spa->spa_config, 4); 1147 } 1148 mutex_exit(&spa_namespace_lock); 1149 } 1150 1151 static void 1152 dump_label(const char *dev) 1153 { 1154 int fd; 1155 vdev_label_t label; 1156 char *buf = label.vl_vdev_phys.vp_nvlist; 1157 size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); 1158 struct stat64 statbuf; 1159 uint64_t psize; 1160 int l; 1161 1162 if ((fd = open64(dev, O_RDONLY)) < 0) { 1163 (void) printf("cannot open '%s': %s\n", dev, strerror(errno)); 1164 exit(1); 1165 } 1166 1167 if (fstat64(fd, &statbuf) != 0) { 1168 (void) printf("failed to stat '%s': %s\n", dev, 1169 strerror(errno)); 1170 exit(1); 1171 } 1172 1173 psize = statbuf.st_size; 1174 psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); 1175 1176 for (l = 0; l < VDEV_LABELS; l++) { 1177 1178 nvlist_t *config = NULL; 1179 1180 (void) printf("--------------------------------------------\n"); 1181 (void) printf("LABEL %d\n", l); 1182 (void) printf("--------------------------------------------\n"); 1183 1184 if (pread64(fd, &label, sizeof (label), 1185 vdev_label_offset(psize, l, 0)) != sizeof (label)) { 1186 (void) printf("failed to read label %d\n", l); 1187 continue; 1188 } 1189 1190 if (nvlist_unpack(buf, buflen, &config, 0) != 0) { 1191 (void) printf("failed to unpack label %d\n", l); 1192 continue; 1193 } 1194 dump_nvlist(config, 4); 1195 nvlist_free(config); 1196 } 1197 } 1198 1199 /*ARGSUSED*/ 1200 static void 1201 dump_one_dir(char *dsname, void *arg) 1202 { 1203 int error; 1204 objset_t *os; 1205 1206 error = dmu_objset_open(dsname, DMU_OST_ANY, 1207 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 1208 if (error) { 1209 (void) printf("Could not open %s\n", dsname); 1210 return; 1211 } 1212 dump_dir(os); 1213 dmu_objset_close(os); 1214 } 1215 1216 static void 1217 zdb_space_map_load(spa_t *spa) 1218 { 1219 vdev_t *rvd = spa->spa_root_vdev; 1220 vdev_t *vd; 1221 int c, m, error; 1222 1223 for (c = 0; c < rvd->vdev_children; c++) { 1224 vd = rvd->vdev_child[c]; 1225 for (m = 0; m < vd->vdev_ms_count; m++) { 1226 metaslab_t *msp = vd->vdev_ms[m]; 1227 mutex_enter(&msp->ms_lock); 1228 error = space_map_load(&msp->ms_allocmap[0], NULL, 1229 SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset); 1230 mutex_exit(&msp->ms_lock); 1231 if (error) 1232 fatal("%s bad space map #%d, error %d", 1233 spa->spa_name, c, error); 1234 } 1235 } 1236 } 1237 1238 static int 1239 zdb_space_map_claim(spa_t *spa, blkptr_t *bp, zbookmark_t *zb) 1240 { 1241 dva_t *dva = bp->blk_dva; 1242 vdev_t *vd; 1243 metaslab_t *msp; 1244 space_map_t *allocmap, *freemap; 1245 int error; 1246 int d; 1247 blkptr_t blk = *bp; 1248 1249 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1250 uint64_t vdev = DVA_GET_VDEV(&dva[d]); 1251 uint64_t offset = DVA_GET_OFFSET(&dva[d]); 1252 uint64_t size = DVA_GET_ASIZE(&dva[d]); 1253 1254 if ((vd = vdev_lookup_top(spa, vdev)) == NULL) 1255 return (ENXIO); 1256 1257 if ((offset >> vd->vdev_ms_shift) >= vd->vdev_ms_count) 1258 return (ENXIO); 1259 1260 msp = vd->vdev_ms[offset >> vd->vdev_ms_shift]; 1261 allocmap = &msp->ms_allocmap[0]; 1262 freemap = &msp->ms_freemap[0]; 1263 1264 /* Prepare our copy of the bp in case we need to read GBHs */ 1265 if (DVA_GET_GANG(&dva[d])) { 1266 size = vdev_psize_to_asize(vd, SPA_GANGBLOCKSIZE); 1267 DVA_SET_ASIZE(&blk.blk_dva[d], size); 1268 DVA_SET_GANG(&blk.blk_dva[d], 0); 1269 } 1270 1271 mutex_enter(&msp->ms_lock); 1272 if (space_map_contains(freemap, offset, size)) { 1273 mutex_exit(&msp->ms_lock); 1274 return (EAGAIN); /* allocated more than once */ 1275 } 1276 1277 if (!space_map_contains(allocmap, offset, size)) { 1278 mutex_exit(&msp->ms_lock); 1279 return (ESTALE); /* not allocated at all */ 1280 } 1281 1282 space_map_remove(allocmap, offset, size); 1283 space_map_add(freemap, offset, size); 1284 1285 mutex_exit(&msp->ms_lock); 1286 } 1287 1288 if (BP_IS_GANG(bp)) { 1289 zio_gbh_phys_t gbh; 1290 int g; 1291 1292 /* LINTED - compile time assert */ 1293 ASSERT(sizeof (zio_gbh_phys_t) == SPA_GANGBLOCKSIZE); 1294 1295 BP_SET_CHECKSUM(&blk, ZIO_CHECKSUM_GANG_HEADER); 1296 BP_SET_PSIZE(&blk, SPA_GANGBLOCKSIZE); 1297 BP_SET_LSIZE(&blk, SPA_GANGBLOCKSIZE); 1298 BP_SET_COMPRESS(&blk, ZIO_COMPRESS_OFF); 1299 error = zio_wait(zio_read(NULL, spa, &blk, &gbh, 1300 SPA_GANGBLOCKSIZE, NULL, NULL, ZIO_PRIORITY_SYNC_READ, 1301 ZIO_FLAG_CANFAIL | ZIO_FLAG_CONFIG_HELD, zb)); 1302 if (error) 1303 return (error); 1304 if (BP_SHOULD_BYTESWAP(&blk)) 1305 byteswap_uint64_array(&gbh, SPA_GANGBLOCKSIZE); 1306 for (g = 0; g < SPA_GBH_NBLKPTRS; g++) { 1307 if (BP_IS_HOLE(&gbh.zg_blkptr[g])) 1308 break; 1309 error = zdb_space_map_claim(spa, &gbh.zg_blkptr[g], zb); 1310 if (error) 1311 return (error); 1312 } 1313 } 1314 1315 return (0); 1316 } 1317 1318 static void 1319 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size) 1320 { 1321 metaslab_t *msp; 1322 1323 /* LINTED */ 1324 msp = (metaslab_t *)((char *)sm - offsetof(metaslab_t, ms_allocmap[0])); 1325 1326 (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", 1327 (u_longlong_t)msp->ms_group->mg_vd->vdev_id, 1328 (u_longlong_t)start, 1329 (u_longlong_t)size); 1330 } 1331 1332 static void 1333 zdb_space_map_unload(spa_t *spa) 1334 { 1335 vdev_t *rvd = spa->spa_root_vdev; 1336 vdev_t *vd; 1337 int c, m; 1338 1339 for (c = 0; c < rvd->vdev_children; c++) { 1340 vd = rvd->vdev_child[c]; 1341 for (m = 0; m < vd->vdev_ms_count; m++) { 1342 metaslab_t *msp = vd->vdev_ms[m]; 1343 mutex_enter(&msp->ms_lock); 1344 space_map_vacate(&msp->ms_allocmap[0], zdb_leak, 1345 &msp->ms_allocmap[0]); 1346 space_map_unload(&msp->ms_allocmap[0]); 1347 space_map_vacate(&msp->ms_freemap[0], NULL, NULL); 1348 mutex_exit(&msp->ms_lock); 1349 } 1350 } 1351 } 1352 1353 static void 1354 zdb_refresh_ubsync(spa_t *spa) 1355 { 1356 uberblock_t ub = { 0 }; 1357 vdev_t *rvd = spa->spa_root_vdev; 1358 zio_t *zio; 1359 1360 /* 1361 * Reload the uberblock. 1362 */ 1363 zio = zio_root(spa, NULL, NULL, 1364 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); 1365 vdev_uberblock_load(zio, rvd, &ub); 1366 (void) zio_wait(zio); 1367 1368 if (ub.ub_txg != 0) 1369 spa->spa_ubsync = ub; 1370 } 1371 1372 /* 1373 * Verify that the sum of the sizes of all blocks in the pool adds up 1374 * to the SPA's sa_alloc total. 1375 */ 1376 typedef struct zdb_blkstats { 1377 uint64_t zb_asize; 1378 uint64_t zb_lsize; 1379 uint64_t zb_psize; 1380 uint64_t zb_count; 1381 } zdb_blkstats_t; 1382 1383 #define DMU_OT_DEFERRED DMU_OT_NONE 1384 #define DMU_OT_TOTAL DMU_OT_NUMTYPES 1385 1386 #define ZB_TOTAL ZB_MAXLEVEL 1387 1388 typedef struct zdb_cb { 1389 zdb_blkstats_t zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1]; 1390 uint64_t zcb_errors[256]; 1391 traverse_blk_cache_t *zcb_cache; 1392 int zcb_readfails; 1393 int zcb_haderrors; 1394 } zdb_cb_t; 1395 1396 static void 1397 zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, int type) 1398 { 1399 int i, error; 1400 1401 for (i = 0; i < 4; i++) { 1402 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; 1403 int t = (i & 1) ? type : DMU_OT_TOTAL; 1404 zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; 1405 1406 zb->zb_asize += BP_GET_ASIZE(bp); 1407 zb->zb_lsize += BP_GET_LSIZE(bp); 1408 zb->zb_psize += BP_GET_PSIZE(bp); 1409 zb->zb_count++; 1410 } 1411 1412 if (dump_opt['L']) 1413 return; 1414 1415 error = zdb_space_map_claim(spa, bp, &zcb->zcb_cache->bc_bookmark); 1416 1417 if (error == 0) 1418 return; 1419 1420 if (error == EAGAIN) 1421 (void) fatal("double-allocation, bp=%p", bp); 1422 1423 if (error == ESTALE) 1424 (void) fatal("reference to freed block, bp=%p", bp); 1425 1426 (void) fatal("fatal error %d in bp %p", error, bp); 1427 } 1428 1429 static int 1430 zdb_blkptr_cb(traverse_blk_cache_t *bc, spa_t *spa, void *arg) 1431 { 1432 zbookmark_t *zb = &bc->bc_bookmark; 1433 zdb_cb_t *zcb = arg; 1434 blkptr_t *bp = &bc->bc_blkptr; 1435 dmu_object_type_t type = BP_GET_TYPE(bp); 1436 char blkbuf[BP_SPRINTF_LEN]; 1437 int error = 0; 1438 1439 if (bc->bc_errno) { 1440 if (zcb->zcb_readfails++ < 10 && dump_opt['L']) { 1441 zdb_refresh_ubsync(spa); 1442 error = EAGAIN; 1443 } else { 1444 zcb->zcb_haderrors = 1; 1445 zcb->zcb_errors[bc->bc_errno]++; 1446 error = ERESTART; 1447 } 1448 1449 if (dump_opt['b'] >= 3 || (dump_opt['b'] >= 2 && bc->bc_errno)) 1450 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1451 else 1452 blkbuf[0] = '\0'; 1453 1454 (void) printf("zdb_blkptr_cb: Got error %d reading " 1455 "<%llu, %llu, %lld, %llx> %s -- %s\n", 1456 bc->bc_errno, 1457 (u_longlong_t)zb->zb_objset, 1458 (u_longlong_t)zb->zb_object, 1459 (u_longlong_t)zb->zb_level, 1460 (u_longlong_t)zb->zb_blkid, 1461 blkbuf, 1462 error == EAGAIN ? "retrying" : "skipping"); 1463 1464 return (error); 1465 } 1466 1467 zcb->zcb_readfails = 0; 1468 1469 ASSERT(!BP_IS_HOLE(bp)); 1470 1471 if (dump_opt['b'] >= 4) { 1472 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); 1473 (void) printf("objset %llu object %llu offset 0x%llx %s\n", 1474 (u_longlong_t)zb->zb_objset, 1475 (u_longlong_t)zb->zb_object, 1476 (u_longlong_t)blkid2offset(bc->bc_dnode, 1477 zb->zb_level, zb->zb_blkid), 1478 blkbuf); 1479 } 1480 1481 zdb_count_block(spa, zcb, bp, type); 1482 1483 return (0); 1484 } 1485 1486 static int 1487 dump_block_stats(spa_t *spa) 1488 { 1489 traverse_handle_t *th; 1490 zdb_cb_t zcb = { 0 }; 1491 traverse_blk_cache_t dummy_cache = { 0 }; 1492 zdb_blkstats_t *zb, *tzb; 1493 uint64_t alloc, space; 1494 int leaks = 0; 1495 int advance = zdb_advance; 1496 int flags; 1497 int e; 1498 1499 zcb.zcb_cache = &dummy_cache; 1500 1501 if (dump_opt['c']) 1502 advance |= ADVANCE_DATA; 1503 1504 advance |= ADVANCE_PRUNE | ADVANCE_ZIL; 1505 1506 (void) printf("\nTraversing all blocks to %sverify" 1507 " nothing leaked ...\n", 1508 dump_opt['c'] ? "verify checksums and " : ""); 1509 1510 /* 1511 * Load all space maps. As we traverse the pool, if we find a block 1512 * that's not in its space map, that indicates a double-allocation, 1513 * reference to a freed block, or an unclaimed block. Otherwise we 1514 * remove the block from the space map. If the space maps are not 1515 * empty when we're done, that indicates leaked blocks. 1516 */ 1517 if (!dump_opt['L']) 1518 zdb_space_map_load(spa); 1519 1520 /* 1521 * If there's a deferred-free bplist, process that first. 1522 */ 1523 if (spa->spa_sync_bplist_obj != 0) { 1524 bplist_t *bpl = &spa->spa_sync_bplist; 1525 blkptr_t blk; 1526 uint64_t itor = 0; 1527 1528 VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset, 1529 spa->spa_sync_bplist_obj)); 1530 1531 while (bplist_iterate(bpl, &itor, &blk) == 0) { 1532 if (dump_opt['b'] >= 4) { 1533 char blkbuf[BP_SPRINTF_LEN]; 1534 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk); 1535 (void) printf("[%s] %s\n", 1536 "deferred free", blkbuf); 1537 } 1538 zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED); 1539 } 1540 1541 bplist_close(bpl); 1542 } 1543 1544 /* 1545 * Now traverse the pool. If we're reading all data to verify 1546 * checksums, do a scrubbing read so that we validate all copies. 1547 */ 1548 flags = ZIO_FLAG_CANFAIL; 1549 if (advance & ADVANCE_DATA) 1550 flags |= ZIO_FLAG_SCRUB; 1551 th = traverse_init(spa, zdb_blkptr_cb, &zcb, advance, flags); 1552 th->th_noread = zdb_noread; 1553 1554 traverse_add_pool(th, 0, spa_first_txg(spa) + TXG_CONCURRENT_STATES); 1555 1556 while (traverse_more(th) == EAGAIN) 1557 continue; 1558 1559 traverse_fini(th); 1560 1561 if (zcb.zcb_haderrors) { 1562 (void) printf("\nError counts:\n\n"); 1563 (void) printf("\t%5s %s\n", "errno", "count"); 1564 for (e = 0; e < 256; e++) { 1565 if (zcb.zcb_errors[e] != 0) { 1566 (void) printf("\t%5d %llu\n", 1567 e, (u_longlong_t)zcb.zcb_errors[e]); 1568 } 1569 } 1570 } 1571 1572 /* 1573 * Report any leaked segments. 1574 */ 1575 if (!dump_opt['L']) 1576 zdb_space_map_unload(spa); 1577 1578 if (dump_opt['L']) 1579 (void) printf("\n\n *** Live pool traversal; " 1580 "block counts are only approximate ***\n\n"); 1581 1582 alloc = spa_get_alloc(spa); 1583 space = spa_get_space(spa); 1584 1585 tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL]; 1586 1587 if (tzb->zb_asize == alloc) { 1588 (void) printf("\n\tNo leaks (block sum matches space" 1589 " maps exactly)\n"); 1590 } else { 1591 (void) printf("block traversal size %llu != alloc %llu " 1592 "(leaked %lld)\n", 1593 (u_longlong_t)tzb->zb_asize, 1594 (u_longlong_t)alloc, 1595 (u_longlong_t)(alloc - tzb->zb_asize)); 1596 leaks = 1; 1597 } 1598 1599 if (tzb->zb_count == 0) 1600 return (2); 1601 1602 (void) printf("\n"); 1603 (void) printf("\tbp count: %10llu\n", 1604 (u_longlong_t)tzb->zb_count); 1605 (void) printf("\tbp logical: %10llu\t avg: %6llu\n", 1606 (u_longlong_t)tzb->zb_lsize, 1607 (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); 1608 (void) printf("\tbp physical: %10llu\t avg:" 1609 " %6llu\tcompression: %6.2f\n", 1610 (u_longlong_t)tzb->zb_psize, 1611 (u_longlong_t)(tzb->zb_psize / tzb->zb_count), 1612 (double)tzb->zb_lsize / tzb->zb_psize); 1613 (void) printf("\tbp allocated: %10llu\t avg:" 1614 " %6llu\tcompression: %6.2f\n", 1615 (u_longlong_t)tzb->zb_asize, 1616 (u_longlong_t)(tzb->zb_asize / tzb->zb_count), 1617 (double)tzb->zb_lsize / tzb->zb_asize); 1618 (void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n", 1619 (u_longlong_t)alloc, 100.0 * alloc / space); 1620 1621 if (dump_opt['b'] >= 2) { 1622 int l, t, level; 1623 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" 1624 "\t avg\t comp\t%%Total\tType\n"); 1625 1626 for (t = 0; t <= DMU_OT_NUMTYPES; t++) { 1627 char csize[6], lsize[6], psize[6], asize[6], avg[6]; 1628 char *typename; 1629 1630 typename = t == DMU_OT_DEFERRED ? "deferred free" : 1631 t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name; 1632 1633 if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { 1634 (void) printf("%6s\t%5s\t%5s\t%5s" 1635 "\t%5s\t%5s\t%6s\t%s\n", 1636 "-", 1637 "-", 1638 "-", 1639 "-", 1640 "-", 1641 "-", 1642 "-", 1643 typename); 1644 continue; 1645 } 1646 1647 for (l = ZB_TOTAL - 1; l >= -1; l--) { 1648 level = (l == -1 ? ZB_TOTAL : l); 1649 zb = &zcb.zcb_type[level][t]; 1650 1651 if (zb->zb_asize == 0) 1652 continue; 1653 1654 if (dump_opt['b'] < 3 && level != ZB_TOTAL) 1655 continue; 1656 1657 if (level == 0 && zb->zb_asize == 1658 zcb.zcb_type[ZB_TOTAL][t].zb_asize) 1659 continue; 1660 1661 nicenum(zb->zb_count, csize); 1662 nicenum(zb->zb_lsize, lsize); 1663 nicenum(zb->zb_psize, psize); 1664 nicenum(zb->zb_asize, asize); 1665 nicenum(zb->zb_asize / zb->zb_count, avg); 1666 1667 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" 1668 "\t%5.2f\t%6.2f\t", 1669 csize, lsize, psize, asize, avg, 1670 (double)zb->zb_lsize / zb->zb_psize, 1671 100.0 * zb->zb_asize / tzb->zb_asize); 1672 1673 if (level == ZB_TOTAL) 1674 (void) printf("%s\n", typename); 1675 else 1676 (void) printf(" L%d %s\n", 1677 level, typename); 1678 } 1679 } 1680 } 1681 1682 (void) printf("\n"); 1683 1684 if (leaks) 1685 return (2); 1686 1687 if (zcb.zcb_haderrors) 1688 return (3); 1689 1690 return (0); 1691 } 1692 1693 static void 1694 dump_zpool(spa_t *spa) 1695 { 1696 dsl_pool_t *dp = spa_get_dsl(spa); 1697 int rc = 0; 1698 1699 if (dump_opt['u']) 1700 dump_uberblock(&spa->spa_uberblock); 1701 1702 if (dump_opt['d'] || dump_opt['i']) { 1703 dump_dir(dp->dp_meta_objset); 1704 if (dump_opt['d'] >= 3) { 1705 dump_bplist(dp->dp_meta_objset, 1706 spa->spa_sync_bplist_obj, "Deferred frees"); 1707 dump_dtl(spa->spa_root_vdev, 0); 1708 dump_metaslabs(spa); 1709 } 1710 dmu_objset_find(spa->spa_name, dump_one_dir, NULL, 1711 DS_FIND_SNAPSHOTS); 1712 } 1713 1714 if (dump_opt['b'] || dump_opt['c']) 1715 rc = dump_block_stats(spa); 1716 1717 if (dump_opt['s']) 1718 show_pool_stats(spa); 1719 1720 if (rc != 0) 1721 exit(rc); 1722 } 1723 1724 #define ZDB_FLAG_CHECKSUM 0x0001 1725 #define ZDB_FLAG_DECOMPRESS 0x0002 1726 #define ZDB_FLAG_BSWAP 0x0004 1727 #define ZDB_FLAG_GBH 0x0008 1728 #define ZDB_FLAG_INDIRECT 0x0010 1729 #define ZDB_FLAG_PHYS 0x0020 1730 #define ZDB_FLAG_RAW 0x0040 1731 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 1732 1733 int flagbits[256]; 1734 1735 static void 1736 zdb_print_blkptr(blkptr_t *bp, int flags) 1737 { 1738 dva_t *dva = bp->blk_dva; 1739 int d; 1740 1741 if (flags & ZDB_FLAG_BSWAP) 1742 byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); 1743 /* 1744 * Super-ick warning: This code is also duplicated in 1745 * cmd/mdb/common/modules/zfs/zfs.c . Yeah, I hate code 1746 * replication, too. 1747 */ 1748 for (d = 0; d < BP_GET_NDVAS(bp); d++) { 1749 (void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d, 1750 DVA_GET_VDEV(&dva[d]), DVA_GET_OFFSET(&dva[d])); 1751 (void) printf("\tDVA[%d]: GANG: %-5s GRID: %04llx\t" 1752 "ASIZE: %llx\n", d, 1753 DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE", 1754 DVA_GET_GRID(&dva[d]), DVA_GET_ASIZE(&dva[d])); 1755 (void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d, 1756 DVA_GET_VDEV(&dva[d]), DVA_GET_OFFSET(&dva[d]), 1757 BP_GET_PSIZE(bp), 1758 BP_SHOULD_BYTESWAP(bp) ? "e" : "", 1759 !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ? 1760 "d" : "", 1761 DVA_GET_GANG(&dva[d]) ? "g" : "", 1762 BP_GET_COMPRESS(bp) != 0 ? "d" : ""); 1763 } 1764 (void) printf("\tLSIZE: %-16llx\t\tPSIZE: %llx\n", 1765 BP_GET_LSIZE(bp), BP_GET_PSIZE(bp)); 1766 (void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE: %s\n", 1767 BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG", 1768 dmu_ot[BP_GET_TYPE(bp)].ot_name); 1769 (void) printf("\tBIRTH: %-16llx LEVEL: %-2llu\tFILL: %llx\n", 1770 (u_longlong_t)bp->blk_birth, BP_GET_LEVEL(bp), 1771 (u_longlong_t)bp->blk_fill); 1772 (void) printf("\tCKFUNC: %-16s\t\tCOMP: %s\n", 1773 zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name, 1774 zio_compress_table[BP_GET_COMPRESS(bp)].ci_name); 1775 (void) printf("\tCKSUM: %llx:%llx:%llx:%llx\n", 1776 (u_longlong_t)bp->blk_cksum.zc_word[0], 1777 (u_longlong_t)bp->blk_cksum.zc_word[1], 1778 (u_longlong_t)bp->blk_cksum.zc_word[2], 1779 (u_longlong_t)bp->blk_cksum.zc_word[3]); 1780 } 1781 1782 static void 1783 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) 1784 { 1785 int i; 1786 1787 for (i = 0; i < nbps; i++) 1788 zdb_print_blkptr(&bp[i], flags); 1789 } 1790 1791 static void 1792 zdb_dump_gbh(void *buf, int flags) 1793 { 1794 zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); 1795 } 1796 1797 static void 1798 zdb_dump_block_raw(void *buf, uint64_t size, int flags) 1799 { 1800 if (flags & ZDB_FLAG_BSWAP) 1801 byteswap_uint64_array(buf, size); 1802 (void) write(2, buf, size); 1803 } 1804 1805 static void 1806 zdb_dump_block(char *label, void *buf, uint64_t size, int flags) 1807 { 1808 uint64_t *d = (uint64_t *)buf; 1809 int nwords = size / sizeof (uint64_t); 1810 int do_bswap = !!(flags & ZDB_FLAG_BSWAP); 1811 int i, j; 1812 char *hdr, *c; 1813 1814 1815 if (do_bswap) 1816 hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; 1817 else 1818 hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; 1819 1820 (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); 1821 1822 for (i = 0; i < nwords; i += 2) { 1823 (void) printf("%06llx: %016llx %016llx ", 1824 (u_longlong_t)(i * sizeof (uint64_t)), 1825 (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), 1826 (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); 1827 1828 c = (char *)&d[i]; 1829 for (j = 0; j < 2 * sizeof (uint64_t); j++) 1830 (void) printf("%c", isprint(c[j]) ? c[j] : '.'); 1831 (void) printf("\n"); 1832 } 1833 } 1834 1835 /* 1836 * There are two acceptable formats: 1837 * leaf_name - For example: c1t0d0 or /tmp/ztest.0a 1838 * child[.child]* - For example: 0.1.1 1839 * 1840 * The second form can be used to specify arbitrary vdevs anywhere 1841 * in the heirarchy. For example, in a pool with a mirror of 1842 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . 1843 */ 1844 static vdev_t * 1845 zdb_vdev_lookup(vdev_t *vdev, char *path) 1846 { 1847 char *s, *p, *q; 1848 int i; 1849 1850 if (vdev == NULL) 1851 return (NULL); 1852 1853 /* First, assume the x.x.x.x format */ 1854 i = (int)strtoul(path, &s, 10); 1855 if (s == path || (s && *s != '.' && *s != '\0')) 1856 goto name; 1857 if (i < 0 || i >= vdev->vdev_children) 1858 return (NULL); 1859 1860 vdev = vdev->vdev_child[i]; 1861 if (*s == '\0') 1862 return (vdev); 1863 return (zdb_vdev_lookup(vdev, s+1)); 1864 1865 name: 1866 for (i = 0; i < vdev->vdev_children; i++) { 1867 vdev_t *vc = vdev->vdev_child[i]; 1868 1869 if (vc->vdev_path == NULL) { 1870 vc = zdb_vdev_lookup(vc, path); 1871 if (vc == NULL) 1872 continue; 1873 else 1874 return (vc); 1875 } 1876 1877 p = strrchr(vc->vdev_path, '/'); 1878 p = p ? p + 1 : vc->vdev_path; 1879 q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; 1880 1881 if (strcmp(vc->vdev_path, path) == 0) 1882 return (vc); 1883 if (strcmp(p, path) == 0) 1884 return (vc); 1885 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) 1886 return (vc); 1887 } 1888 1889 return (NULL); 1890 } 1891 1892 /* 1893 * Read a block from a pool and print it out. The syntax of the 1894 * block descriptor is: 1895 * 1896 * pool:vdev_specifier:offset:size[:flags] 1897 * 1898 * pool - The name of the pool you wish to read from 1899 * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) 1900 * offset - offset, in hex, in bytes 1901 * size - Amount of data to read, in hex, in bytes 1902 * flags - A string of characters specifying options 1903 * b: Decode a blkptr at given offset within block 1904 * *c: Calculate and display checksums 1905 * *d: Decompress data before dumping 1906 * e: Byteswap data before dumping 1907 * *g: Display data as a gang block header 1908 * *i: Display as an indirect block 1909 * p: Do I/O to physical offset 1910 * r: Dump raw data to stdout 1911 * 1912 * * = not yet implemented 1913 */ 1914 static void 1915 zdb_read_block(char *thing, spa_t **spap) 1916 { 1917 spa_t *spa = *spap; 1918 int flags = 0; 1919 uint64_t offset = 0, size = 0, blkptr_offset = 0; 1920 zio_t *zio; 1921 vdev_t *vd; 1922 void *buf; 1923 char *s, *p, *dup, *spa_name, *vdev, *flagstr; 1924 int i, error, zio_flags; 1925 1926 dup = strdup(thing); 1927 s = strtok(dup, ":"); 1928 spa_name = s ? s : ""; 1929 s = strtok(NULL, ":"); 1930 vdev = s ? s : ""; 1931 s = strtok(NULL, ":"); 1932 offset = strtoull(s ? s : "", NULL, 16); 1933 s = strtok(NULL, ":"); 1934 size = strtoull(s ? s : "", NULL, 16); 1935 s = strtok(NULL, ":"); 1936 flagstr = s ? s : ""; 1937 1938 s = NULL; 1939 if (size == 0) 1940 s = "size must not be zero"; 1941 if (!IS_P2ALIGNED(size, DEV_BSIZE)) 1942 s = "size must be a multiple of sector size"; 1943 if (!IS_P2ALIGNED(offset, DEV_BSIZE)) 1944 s = "offset must be a multiple of sector size"; 1945 if (s) { 1946 (void) printf("Invalid block specifier: %s - %s\n", thing, s); 1947 free(dup); 1948 return; 1949 } 1950 1951 for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { 1952 for (i = 0; flagstr[i]; i++) { 1953 int bit = flagbits[flagstr[i]]; 1954 1955 if (bit == 0) { 1956 (void) printf("***Invalid flag: %c\n", 1957 flagstr[i]); 1958 continue; 1959 } 1960 flags |= bit; 1961 1962 /* If it's not something with an argument, keep going */ 1963 if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS | 1964 ZDB_FLAG_PRINT_BLKPTR)) == 0) 1965 continue; 1966 1967 p = &flagstr[i + 1]; 1968 if (bit == ZDB_FLAG_PRINT_BLKPTR) 1969 blkptr_offset = strtoull(p, &p, 16); 1970 if (*p != ':' && *p != '\0') { 1971 (void) printf("***Invalid flag arg: '%s'\n", s); 1972 free(dup); 1973 return; 1974 } 1975 } 1976 } 1977 1978 if (spa == NULL || spa->spa_name == NULL || 1979 strcmp(spa->spa_name, spa_name)) { 1980 if (spa && spa->spa_name) 1981 spa_close(spa, (void *)zdb_read_block); 1982 error = spa_open(spa_name, spap, (void *)zdb_read_block); 1983 if (error) 1984 fatal("Failed to open pool '%s': errno = %d\n", 1985 spa_name, error); 1986 spa = *spap; 1987 } 1988 1989 vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); 1990 if (vd == NULL) { 1991 (void) printf("***Invalid vdev: %s\n", vdev); 1992 free(dup); 1993 return; 1994 } else { 1995 if (vd->vdev_path) 1996 (void) printf("Found vdev: %s\n", vd->vdev_path); 1997 else 1998 (void) printf("Found vdev type: %s\n", 1999 vd->vdev_ops->vdev_op_type); 2000 } 2001 2002 buf = umem_alloc(size, UMEM_NOFAIL); 2003 2004 zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | 2005 ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | ZIO_FLAG_NOBOOKMARK; 2006 2007 if (flags & ZDB_FLAG_PHYS) 2008 zio_flags |= ZIO_FLAG_PHYSICAL; 2009 2010 zio = zio_root(spa, NULL, NULL, 0); 2011 /* XXX todo - cons up a BP so RAID-Z will be happy */ 2012 zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size, 2013 ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL)); 2014 error = zio_wait(zio); 2015 2016 if (error) { 2017 (void) printf("Read of %s failed, error: %d\n", thing, error); 2018 goto out; 2019 } 2020 2021 if (flags & ZDB_FLAG_PRINT_BLKPTR) 2022 zdb_print_blkptr((blkptr_t *)(void *) 2023 ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); 2024 else if (flags & ZDB_FLAG_RAW) 2025 zdb_dump_block_raw(buf, size, flags); 2026 else if (flags & ZDB_FLAG_INDIRECT) 2027 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), 2028 flags); 2029 else if (flags & ZDB_FLAG_GBH) 2030 zdb_dump_gbh(buf, flags); 2031 else 2032 zdb_dump_block(thing, buf, size, flags); 2033 2034 out: 2035 umem_free(buf, size); 2036 free(dup); 2037 } 2038 2039 int 2040 main(int argc, char **argv) 2041 { 2042 int i, c; 2043 struct rlimit rl = { 1024, 1024 }; 2044 spa_t *spa; 2045 objset_t *os = NULL; 2046 char *endstr; 2047 int dump_all = 1; 2048 int verbose = 0; 2049 int error; 2050 int flag, set; 2051 vdev_knob_t *vk; 2052 2053 (void) setrlimit(RLIMIT_NOFILE, &rl); 2054 2055 dprintf_setup(&argc, argv); 2056 2057 while ((c = getopt(argc, argv, "udibcsvCLO:B:UlR")) != -1) { 2058 switch (c) { 2059 case 'u': 2060 case 'd': 2061 case 'i': 2062 case 'b': 2063 case 'c': 2064 case 's': 2065 case 'C': 2066 case 'l': 2067 case 'R': 2068 dump_opt[c]++; 2069 dump_all = 0; 2070 break; 2071 case 'L': 2072 dump_opt[c]++; 2073 break; 2074 case 'O': 2075 endstr = optarg; 2076 if (endstr[0] == '!') { 2077 endstr++; 2078 set = 0; 2079 } else { 2080 set = 1; 2081 } 2082 if (strcmp(endstr, "post") == 0) { 2083 flag = ADVANCE_PRE; 2084 set = !set; 2085 } else if (strcmp(endstr, "pre") == 0) { 2086 flag = ADVANCE_PRE; 2087 } else if (strcmp(endstr, "prune") == 0) { 2088 flag = ADVANCE_PRUNE; 2089 } else if (strcmp(endstr, "data") == 0) { 2090 flag = ADVANCE_DATA; 2091 } else if (strcmp(endstr, "holes") == 0) { 2092 flag = ADVANCE_HOLES; 2093 } else { 2094 usage(); 2095 } 2096 if (set) 2097 zdb_advance |= flag; 2098 else 2099 zdb_advance &= ~flag; 2100 break; 2101 case 'B': 2102 endstr = optarg - 1; 2103 zdb_noread.zb_objset = strtoull(endstr + 1, &endstr, 0); 2104 zdb_noread.zb_object = strtoull(endstr + 1, &endstr, 0); 2105 zdb_noread.zb_level = strtol(endstr + 1, &endstr, 0); 2106 zdb_noread.zb_blkid = strtoull(endstr + 1, &endstr, 16); 2107 (void) printf("simulating bad block " 2108 "<%llu, %llu, %lld, %llx>\n", 2109 (u_longlong_t)zdb_noread.zb_objset, 2110 (u_longlong_t)zdb_noread.zb_object, 2111 (u_longlong_t)zdb_noread.zb_level, 2112 (u_longlong_t)zdb_noread.zb_blkid); 2113 break; 2114 case 'v': 2115 verbose++; 2116 break; 2117 case 'U': 2118 spa_config_dir = "/tmp"; 2119 break; 2120 default: 2121 usage(); 2122 break; 2123 } 2124 } 2125 2126 kernel_init(FREAD); 2127 2128 /* 2129 * Disable vdev caching. If we don't do this, live pool traversal 2130 * won't make progress because it will never see disk updates. 2131 */ 2132 for (vk = vdev_knob_next(NULL); vk != NULL; vk = vdev_knob_next(vk)) { 2133 if (strcmp(vk->vk_name, "cache_size") == 0) 2134 vk->vk_default = 0; 2135 } 2136 2137 for (c = 0; c < 256; c++) { 2138 if (dump_all && c != 'L' && c != 'l' && c != 'R') 2139 dump_opt[c] = 1; 2140 if (dump_opt[c]) 2141 dump_opt[c] += verbose; 2142 } 2143 2144 argc -= optind; 2145 argv += optind; 2146 2147 if (argc < 1) { 2148 if (dump_opt['C']) { 2149 dump_config(NULL); 2150 return (0); 2151 } 2152 usage(); 2153 } 2154 2155 if (dump_opt['l']) { 2156 dump_label(argv[0]); 2157 return (0); 2158 } 2159 2160 if (dump_opt['R']) { 2161 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; 2162 flagbits['c'] = ZDB_FLAG_CHECKSUM; 2163 flagbits['d'] = ZDB_FLAG_DECOMPRESS; 2164 flagbits['e'] = ZDB_FLAG_BSWAP; 2165 flagbits['g'] = ZDB_FLAG_GBH; 2166 flagbits['i'] = ZDB_FLAG_INDIRECT; 2167 flagbits['p'] = ZDB_FLAG_PHYS; 2168 flagbits['r'] = ZDB_FLAG_RAW; 2169 2170 spa = NULL; 2171 while (argv[0]) { 2172 zdb_read_block(argv[0], &spa); 2173 argv++; 2174 argc--; 2175 } 2176 if (spa) 2177 spa_close(spa, (void *)zdb_read_block); 2178 return (0); 2179 } 2180 2181 if (dump_opt['C']) 2182 dump_config(argv[0]); 2183 2184 if (strchr(argv[0], '/') != NULL) { 2185 error = dmu_objset_open(argv[0], DMU_OST_ANY, 2186 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 2187 } else { 2188 error = spa_open(argv[0], &spa, FTAG); 2189 } 2190 2191 if (error) 2192 fatal("can't open %s: error %d", argv[0], error); 2193 2194 argv++; 2195 if (--argc > 0) { 2196 zopt_objects = argc; 2197 zopt_object = calloc(zopt_objects, sizeof (uint64_t)); 2198 for (i = 0; i < zopt_objects; i++) { 2199 errno = 0; 2200 zopt_object[i] = strtoull(argv[i], NULL, 0); 2201 if (zopt_object[i] == 0 && errno != 0) 2202 fatal("bad object number %s: %s", 2203 argv[i], strerror(errno)); 2204 } 2205 } 2206 2207 if (os != NULL) { 2208 dump_dir(os); 2209 dmu_objset_close(os); 2210 } else { 2211 dump_zpool(spa); 2212 spa_close(spa, FTAG); 2213 } 2214 2215 kernel_fini(); 2216 2217 return (0); 2218 } 2219